| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention relates to communication technology and is intended for turbocode decoding. In each iteration procedure when performing multipass parallel decoding of the decoded code blocks the method includes: for decoded code blocks in the current path, receiving by the module of decoding of all first intermediate variables of the current path by means of recurrent calculation from the beginning to the end and simultaneous receiving of all second intermediate variables of the current path by means of recurrent calculation from the end to the beginning; receiving by the decoding module of all logarithmic likelihood ratios of the current path (LLR) according to all received first intermediate variables and the second intermediate variables, and also all metrics of branches of the decoded code blocks; and receiving by the decoding module of aprioristic information and the decoding result deduced by the current path according to all logarithmic likelihood ratios. In each parallel path of decoding modules two types of intermediate variables are calculated simultaneously by means of recurrent calculation from the beginning to the end and recurrent calculation from the end to the beginning.EFFECT: reduction of decoding delay and increase of decoding rate.13 cl, 9 dwg |
